Sample substitution can be an acceptable data-collection strategy : the case of the Belgian Health Interview Survey

Abstract: Objectives Substitution of non-participating households is used in the Belgian Health Interview Survey (BHIS) as a method to obtain the predefined net sample size. Yet, possible effects of applying substitution on response rates and health estimates remain uncertain. In this article, the process of substitution with its impact on response rates and health estimates is assessed. Methods The response rates (RR)both at household and individual levelaccording to the sampling criteria were calculated for each stage of the substitution process, together with the individual accrual rate (AR... Mehr ...